diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c1fe997d6..7ead388a1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,109 +17,6 @@ env:
 
 
 jobs:
-  formatting-check:
-    name: Formatting Check
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - name: Run clang-format style check for C/C++/Protobuf programs.
-      uses: jidicula/clang-format-action@v4.8.0
-      with:
-        clang-format-version: '13'
-        exclude-regex: 'dep'
-
-    - name: Check CMake code style
-      run: |
-        pip install cmake-format==0.6.13 && \
-        find \( -type d -path './dep/*/*' -prune \) -o \( -name CMakeLists.txt -exec cmake-format --check {} + \)
-
-  flatpak:
-    name: "Flatpak"
-    runs-on: ubuntu-latest
-    container:
-      # image: bilelmoussaoui/flatpak-github-actions:kde-5.15-21.08
-      image: archlinux:latest
-      options: --privileged
-    steps:
-
-    - name: Update
-      run: |
-        pacman --noconfirm -Suy
-        pacman --noconfirm -S flatpak flatpak-builder xorg-server-xvfb
-        flatpak install --assumeyes org.kde.Sdk//5.15-21.08
-        flatpak install --assumeyes org.freedesktop.Sdk.Extension.golang//21.08
-        flatpak install --assumeyes org.kde.Platform//5.15-21.08
-
-    - name: Show environment variables
-      run: >
-        echo IS_RELEASE: ${{ env.IS_RELEASE }}
-
-    # https://stackoverflow.com/questions/60916931/github-action-does-the-if-have-an-else
-    - name: Determine flatpak release branch
-      uses: haya14busa/action-cond@v1
-      id: flatpak_release_branch
-      with:
-        cond: ${{ env.IS_RELEASE }}
-        if_true: 'stable'
-        if_false: 'development'
-
-
-    - name: Checkout repository
-      uses: actions/checkout@v3
-
-    - name: Clone flatpak manifest from Flathub
-      uses: GuillaumeFalourd/clone-github-repo-action@v2
-      with:
-        owner: 'flathub'
-        repository: 'com.github.Murmele.Gittyup'
-
-    - name: Replace git tag by the commit id on which it runs
-      if: github.ref_type != 'tag'
-      run: >
-        sed -i 's@tag: .*@commit: "${{ (github.event.pull_request && github.event.pull_request.head.sha) || github.sha }}"@' com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Use correct git tag
-      if: github.ref_type == 'tag'
-      run: >
-        sed -i 's@tag: .*$@tag: "${{ github.ref_name }}"@' com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Replace source url
-      run: >
-        sed -i "s@url: .*Gittyup.git@url: $GITHUB_SERVER_URL/$GITHUB_REPOSITORY@" com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Add dev build marker to cmake options
-      if: github.ref_type != 'tag'
-      run: >
-        sed -i 's@config-opts: \["\(.*\)"\]@config-opts: ["\1", "-DDEV_BUILD=${{ github.ref_name }}"]@' com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Replace desktop file name suffix
-      if: github.ref_type != 'tag'
-      run: >
-        sed -i 's@desktop-file-name-suffix: ""@desktop-file-name-suffix: " (Development)"@' com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Enable automatic update
-      if: github.ref_type != 'tag'
-      run: >
-        sed -i 's@-DENABLE_UPDATE_OVER_GUI=OFF@-DENABLE_UPDATE_OVER_GUI=ON@' com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Show Flatpak manifest
-      run: cat com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-
-    - name: Build package
-      uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v4
-      with:
-        bundle: Gittyup.flatpak
-        manifest-path: com.github.Murmele.Gittyup/com.github.Murmele.Gittyup.yml
-        cache: false
-        branch: ${{ steps.flatpak_release_branch.outputs.value }}
-
-    - name: Publish build artifacts
-      uses: actions/upload-artifact@v2
-      with:
-        path: com.github.Murmele.Gittyup/*
-        name: Gittyup Flatpak
-
-
   build:
     runs-on: ${{ matrix.env.os }}
     strategy:
@@ -129,65 +26,30 @@ jobs:
           - version: 5.15.2
             check_only: false
 
-          - version: 5.12.0
-            check_only: true
-
         env:
-          - name: linux
-            os: ubuntu-latest
+          - name: linux_appimage
+            os: ubuntu-20.04
             ninja_platform: linux
             qt_platform: linux
+            qt_arch: gcc_64
             openssl_arch: linux-x86_64
-            cmake_flags: "-DGENERATE_APPDATA=ON"
-            cmake_env: {}
-
-          - name: macos
-            os: macos-latest
-            ninja_platform: mac
-            qt_platform: mac
-            openssl_arch: darwin64-x86_64-cc
-            cmake_env: {}
-            pack: 1
-
-          - name: win64
-            os: windows-latest
-            ninja_platform: win
-            qt_platform: windows
-            qt_arch: win64_msvc2019_64
-            qt_arch_check_only: win64_msvc2017_64
-            openssl_arch: VC-WIN64A
-            msvc_arch: x64
-            cmake_flags: "-DUSE_BUNDLED_ZLIB=1"
-            cmake_env:
-              CMAKE_RC_FLAGS: "/C 1252"
-              CC: clang
-              CXX: clang++
+            ld_library_arch: linux-x86-64
+            cmake_flags: "-DGENERATE_APPDATA=ON -DCMAKE_INSTALL_PREFIX=/usr -DUSE_SYSTEM_QT=ON"
             pack: 1
+            cmake_env: {}
 
-          - name: win32
-            os: windows-latest
-            ninja_platform: win
-            qt_platform: windows
-            qt_arch: win32_msvc2019
-            qt_arch_check_only: win32_msvc2017
-            openssl_arch: VC-WIN32
-            msvc_arch: x86
-            cmake_flags: "-DUSE_BUNDLED_ZLIB=1"
-            cmake_env:
-              CMAKE_RC_FLAGS: "/C 1252"
-              CC: clang
-              CXX: clang++
-              CMAKE_C_FLAGS: -m32
-              CMAKE_CXX_FLAGS: -m32
+          - name: linux_appimage
+            os: ubuntu-latest
+            ninja_platform: linux
+            qt_platform: linux
+            qt_arch: gcc_64
+            openssl_arch: linux-x86_64
+            ld_library_arch: linux-x86-64
+            cmake_flags: "-DGENERATE_APPDATA=ON -DCMAKE_INSTALL_PREFIX=/usr -DUSE_SYSTEM_QT=ON"
             pack: 1
+            cmake_env: {}
 
     steps:
-      # otherwise the testcases will fail, because signature is invalid
-      - name: Set git name and email
-        run: |
-          git config --global user.name "Your Name"
-          git config --global user.email "youremail@yourdomain.com"
-          git config --list
       - name: Configure development build
         if: github.ref_type != 'tag'
         uses: allenevans/set-env@c4f231179ef63887be707202a295d9cb1c687eb9
@@ -200,12 +62,6 @@ jobs:
       - name: Initialize Submodules
         uses: snickerbockers/submodules-init@v4
 
-      - name: Install Perl
-        if: matrix.env.ninja_platform == 'win'
-        uses: shogo82148/actions-setup-perl@v1
-        with:
-          perl-version: '5.30'
-
       - name: Install Qt
         uses: jurplel/install-qt-action@v2.13.0
         timeout-minutes: 10
@@ -218,18 +74,6 @@ jobs:
           install-deps: true
           modules: qtwebengine
 
-      - name: Install Qt
-        uses: jurplel/install-qt-action@v2.13.0
-        timeout-minutes: 10
-        if: matrix.qt.check_only
-        with:
-          version: ${{ matrix.qt.version }}
-          target: desktop
-          host: ${{ matrix.env.qt_platform }}
-          arch: ${{ matrix.env.qt_arch_check_only }}
-          install-deps: true
-          modules: qtwebengine
-
       - name: Install Ninja
         uses: seanmiddleditch/gha-setup-ninja@v3
         with:
@@ -237,16 +81,6 @@ jobs:
           platform: ${{ matrix.env.ninja_platform }}
           destination: ninja
 
-      - name: Setup MSVC environment
-        if: matrix.env.ninja_platform == 'win'
-        uses: seanmiddleditch/gha-setup-vsdevenv@v3
-        with:
-          arch: ${{ matrix.env.msvc_arch }}
-
-      - name: Install NASM
-        if: matrix.env.ninja_platform == 'win'
-        uses: ilammy/setup-nasm@v1.2.0
-
       - name: Build OpenSSL (Linux)
         if: matrix.env.ninja_platform == 'linux'
         run: |
@@ -254,31 +88,12 @@ jobs:
           ./config -fPIC
           make
 
-      - name: Build OpenSSL (macOS)
-        if: matrix.env.ninja_platform == 'mac'
-        run: |
-          cd dep/openssl/openssl
-
-          # this is necessary until https://github.com/openssl/openssl/issues/18720
-          # is fixed in OpenSSL 1.1.1r
-          export CFLAGS=-Wno-error=implicit-function-declaration
-
-          ./Configure ${{ matrix.env.openssl_arch }} no-shared
-          make
-
-      - name: Build OpenSSL (Windows)
-        if: matrix.env.ninja_platform == 'win'
-        run: |
-          cd dep/openssl/openssl
-          perl Configure ${{ matrix.env.openssl_arch }}
-          nmake
-
       - name: Configure Release
         env: ${{ matrix.env.cmake_env }}
         run: |
           mkdir -p build/release
           cd build/release
-          cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DDEBUG_OUTPUT=OFF -DGITTYUP_CI_TESTS=ON ${{ env.CMAKE_FLAGS }} ${{ matrix.env.cmake_flags }} ../..
+          cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DGITTYUP_CI_TESTS=ON ${{ env.CMAKE_FLAGS }} ${{ matrix.env.cmake_flags }} ../..
 
       - name: Build Information
         run: |
@@ -292,117 +107,70 @@ jobs:
           cd build/release
           ninja package
 
-      # Command copied from flathub build process
-      - name: Validate appdata file
-        if: matrix.env.ninja_platform == 'linux' && !matrix.qt.check_only
-        run: |
-          echo "Show generated appdata file"
-          cat ./build/release/rsrc/linux/com.github.Murmele.Gittyup.appdata.xml
-          echo "Start validating appdata file"
-          sudo apt install flatpak
-          sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-          sudo flatpak install -y org.freedesktop.appstream-glib
-          flatpak run --env=G_DEBUG=fatal-criticals org.freedesktop.appstream-glib validate ./build/release/rsrc/linux/com.github.Murmele.Gittyup.appdata.xml
-
-      - name: Publish build artifacts
-        if: matrix.env.pack && !matrix.qt.check_only
-        uses: actions/upload-artifact@v3
-        with:
-          path: build/release/pack/Gittyup-*
-          name: Gittyup ${{ matrix.env.name }}
-
       - name: Publish version file
         if: matrix.env.pack && !matrix.qt.check_only
         uses: actions/upload-artifact@v3
         with:
           path: build/release/VERSION.txt
           name: Gittyup-VERSION
-
-      - name: Test
-        if: matrix.env.ninja_platform != 'win' && matrix.env.ninja_platform != 'mac'
-        uses: GabrielBB/xvfb-action@v1
-        with:
-          working-directory: build/release
-          run: ninja check --verbose
-
-      - name: Test (Windows)
-        if: matrix.env.ninja_platform == 'win'
+          
+      - name: Check Version file
         run: |
           cd build/release
-          ninja check_no_win32_offscreen
-
-  publish:
-    # https://github.com/marvinpinto/actions/issues/177
-    needs: [flatpak, build]
-    runs-on: ubuntu-latest # does not matter which
-    # a prerelase is created when pushing to master
-    # a release is created when a tag will be set
-    # last condition is the same as IS_RELEASE,
-    # but environment variables cannot be used outside of steps
-    # so it was copied to here too
-    if: ${{ github.ref == 'refs/heads/master' || (github.event_name == 'push' && github.ref_type == 'tag' && startswith(github.ref_name, 'gittyup_v'))  }}
-    steps:
-      - name: Download artifacts
-        uses: actions/download-artifact@v3
-        with:
-          path: artifacts
+          cat VERSION.txt
 
-      - name: list artifacts folder
-        run: |
-          echo "Show artifacts folder:"
-          ls artifacts
-          echo "Show artifacts/Gittyup Flatpak folder:"
-          ls "artifacts/Gittyup Flatpak"
-          echo "Show artifacts/Gittyup-x86_64:"
-          ls "artifacts/Gittyup-x86_64"
-          echo "Show artifacts/Gittyup VERSION"
-          ls "artifacts/Gittyup-VERSION"
-    
-      # version is exported from cmake to file
-      - name: Retrieve version
+      - name: Install
+        if: matrix.env.ninja_platform == 'linux' && !matrix.qt.check_only
         run: |
-          echo "::set-output name=VERSION::$(cat artifacts/Gittyup-VERSION/VERSION.txt)"
-        id: version
-
-      - name: Update GitHub release (latest tag)
-        uses: marvinpinto/action-automatic-releases@latest
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          prerelease: true
-          title: 'Latest Build (Development)'
-          automatic_release_tag: 'development'
-          files: |
-            **/artifacts/Gittyup win64/Gittyup*.exe
-            **/artifacts/Gittyup win32/Gittyup*.exe
-            **/artifacts/Gittyup macos/Gittyup*.dmg
-            **/artifacts/Gittyup Flatpak/com.github.Murmele.Gittyup.yml
-            **/Gittyup-x86_64/*.flatpak
+          cd build/release
+          mkdir -p AppDir
+          DESTDIR=AppDir ninja install
 
-      - name: Update GitHub release (version tag)
-        uses: marvinpinto/action-automatic-releases@latest
-        if: ${{ env.IS_RELEASE == 'true'}}
+      - name: Build Appdir
+        if: matrix.env.ninja_platform == 'linux'
+        run: |
+          cd build/release
+          sudo apt -y install appstream
+          sudo apt -y install libfuse2
+          sudo apt -y install libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0
+          sudo apt -y install libxcb-shm0 libxcb-sync1 libxcb-util1 libxcb-xinerama0 libxcb-xinput0 libxcb-xkb1 libxcb-xrm0 libxcb-xv0 libxcb-xvmc0 libxcb1
+
+          export QTDIR=$RUNNER_WORKSPACE/Qt/${{ matrix.qt.version }}/${{ matrix.env.qt_arch }}
+          export LD_LIBRARY_PATH=$QTDIR/lib
+
+          rm -rf ./AppDir/usr/include/
+          strip ./AppDir/usr/bin/cmark ./AppDir/usr/bin/gittyup ./AppDir/usr/bin/indexer ./AppDir/usr/bin/relauncher
+
+          wget -c https://github.com/$(wget -q https://github.com/probonopd/go-appimage/releases/expanded_assets/continuous -O - | grep "appimagetool-.*-x86_64.AppImage" | head -n 1 | cut -d '"' -f 2)
+          chmod +x appimagetool-*.AppImage
+          QTDIR=$QTDIR LD_LIBRARY_PATH=$QTDIR/lib/ ./appimagetool-*.AppImage -s deploy ./AppDir/usr/share/applications/*.desktop --appimage-extract-and-run # Bundle EVERYTHING
+
+          # Modify the AppDir: move ld-linux into the same directory as the payload application
+          # and change AppRun accordingly; so that, e.g., Qt qApp->applicationDirPath() works
+          mv ./AppDir/lib64/ld-${{ matrix.env.ld_library_arch }}.so.2 ./AppDir/usr/bin/
+          sed -i -e 's@^LD_LINUX.*@LD_LINUX=$(find "$HERE/usr/bin" -name "ld-*.so.*" | head -n 1)@g' ./AppDir/AppRun
+      
+      - name: Publish Appdir
+        if: matrix.env.ninja_platform == 'linux'
+        uses: actions/upload-artifact@v3
         with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          prerelease: false
-          title: Gittyup Release ${{ steps.version.outputs.VERSION }}
-          automatic_release_tag: ${{ github.ref_name }}
-          files: |
-            **/artifacts/Gittyup win64/Gittyup*.exe
-            **/artifacts/Gittyup win32/Gittyup*.exe
-            **/artifacts/Gittyup macos/Gittyup*.dmg
-            **/artifacts/Gittyup Flatpak/com.github.Murmele.Gittyup.yml
-            **/Gittyup-x86_64/*.flatpak
+          path: build/release/AppDir
+          name: GittyupAppdir
 
-      # needed otherwise the docs folder is not available     
-      - name: Checkout repository
-        if: ${{ env.IS_RELEASE == 'true'}}
-        uses: actions/checkout@v3
+      - name: Build appimage
+        if: matrix.env.ninja_platform == 'linux'
+        run: |
+        
+          cd build/release
+          rm ./AppDir/usr/share/metainfo/gittyup.appdata.xml
+          VERSION=1.0 #$(cat ./VERSION.txt)
+          VERSION=$VERSION ./appimagetool-*.AppImage ./AppDir # turn AppDir into AppImage
+          ls -lh Gittyup-*
 
-      # update github pages only if it is a release 
-      - name: Deploy Github pages
-        if: ${{ env.IS_RELEASE  == 'true'}}
-        uses: JamesIves/github-pages-deploy-action@v4.4.0
+      - name: Publish Appimage
+        if: matrix.env.ninja_platform == 'linux'
+        uses: actions/upload-artifact@v3
         with:
-          branch: gh-pages # The branch the action should deploy to.
-          folder: docs # The folder the action should deploy.
+          path: build/release/*.AppImage
+          name: Gittyup Appimage
 ...